Solution : https://service.sap.com/sap/support/notes/998143 (SAP Service marketplace login required)
Key words : 
terms ipc dataloader download gateway connection reason, sap gateway failedconnect_pm  gwhost=hostname, sysnr=xxwhere hostname, prerequisites program error, delta download, ashost=hostname, error message, gwserv=sapgwxx, note 486061
Related Notes : 
       
| 486061 | How to get patches for CRM Internet Pricing Configurator |